ASTROSAT CZTI

Data Quality Report

Orbit 09456

Creation date: 2024-06-27T15:46:21.548393
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T01_177T01_9000001344_09456cztM0_level2.evt modeM0/AS1T01_177T01_9000001344_09456cztM0_level2_quad_clean.evt
Size (bytes)579,409,920115,669,440
Size552.6 MB 110.3 MB
Events in quadrant A4,229,906738,502
Events in quadrant B4,303,550733,471
Events in quadrant C3,961,637721,076
Events in quadrant D4,466,119709,984

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181835
B0186084
C0178694
D0191882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8644730.844516%
B8644840.971772%
C8644310.358630%
D8645660.763447%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9260 8647 1 1 0.01% 0.01%
B 9260 8647 13 13 0.14% 0.15%
C 9260 8647 12 12 0.13% 0.14%
D 9260 8647 34 34 0.37% 0.39%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 1 162 83471 386.19 1037 1013 213.5
A 8 5 56944 261.95 1037 1013 213.5
A 1 178 32076 145.48 1037 1013 213.5
B 5 255 132721 655.31 1032 1005 201.0
B 0 214 55079 269.03 1032 1005 201.0
B 0 187 54015 263.73 1032 1005 201.0
C 14 234 47771 200.14 994 999 233.7
C 9 68 24892 102.24 994 999 233.7
C 4 254 13716 54.42 994 999 233.7
D 8 195 246755 968.29 994 970 253.8
D 7 71 148880 582.71 994 970 253.8
D 1 52 96014 374.43 994 970 253.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter